Storage-battery electrode.



No. 641752. v Patented Apr. I7, I900.

n. MACRAE.

STORAGE BATTERY ELECTBUDE.

(Application filed. Apr. 24, 1899.)

(No Model.)

IN VE N 70f? S S E w W A TTOHN E Y NITED STATES PATENT OFFICE.

RODERICK MAORAE, OF BALTIMORE, MARYLAND, ASSIGNOR OF ON E-HALF TOWILLIAM C. L. EGLIN, OF PHILADELPHIA, PENNSYLVANIA.

STO RAG E-BATTERY ELECTRODE;

SPECIFICATION forming part of Letters Patent No. 647,752, dated April17', 1900.

Application filed April 24, 189 9.

To a'ZZ whom it may concern:

Be it known that I, RODERICK MAonAE, a subject of the Queen of GreatBritain and Ireland, residing at Baltimore, in the State of Maryland,have invented certain new and useful Improvements in Storage-BatteryElectrodes, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

My invention relates to electrodes for storage and other batteries; andit consists of the novel features of construction hereinafter fullydescribed, and pointed out in the claims, the object of my presentinvention being principally an economy and facility of construction oftheimproved device due principally to the novel manner in which theelemental parts are constructed, assembled, and combined.

In the accompanying drawings, illustrating my invention, Figure 1 is afront elevation of my improved battery electrode; Fig. 2, asection onthe line 1 2 of Fig. 1, and Fig. 3 aperspective view of the principalelements separated from each other and ready to be assembled.

That feature of the device which consists in forming an integral slattedstructure by uniting at the edges of their opposite ends a series ofslats or plates spaced or separated by flanges or spacing-plates I donot claim herein, as it forms the subject of a separate and now-pendingapplication for patent, filed April 8, 1899, Serial No. 712,270.

The essential features in the present device are, first, the formationof such an elemental unit with a Vertical groove a a on the oppositeedges, (see Fig. 3,) and, secondly, looking or keying a series of theseunits together by interposing alcad-covered conducting-wire (indicatedat b) in such coinciding open vertical grooves of each pair of unit setsof plates.

To enable others skilled in the art to understand and construct theimproved device, I will endeavor to describe it first by reference tosaid pending application for patent, in which is fully stated that theunit A, Fig. 3 hereof, is composed of a series of slats or Serial No.714,280. (No model.)

plates d, which are spaced and separated from each other by interposedflanges or narrow spacing-plates, (indicated at 6,) and then thesespaced plates at are united at their end edges by fusing and solderingthereon a solid vertical edge piece, (indicated at h,) a core ofconducting-wire being at the same time embeddedin the solder-formed edgeh. In the present device I proceed the same except that I do not, embedthe conducting-wire in the solder-formed edge 7L nor construct eachunitelectrode complete in itself; but having formed such solder edge hit is run through an appropriate machine to form a vertical open groovea a therein on either side, preferably a semioylindrical open groove, asshown in the drawings, top and bottom plates 70, of lead, being firstformed or attached by soldering. These units A A may be made of anyconvenient lengths in the process of manufacture, and sections canbe cuttherefrom of such length as may be desired for any specific battery use.To assemble them in a battery-electrode composed, say, of four of theseunits, the parts are brought together, as indicated at Fig. 3, so thatthe vertical grooves a a on opposite sides of each pair of units A willcoincide to form a cylindrical or closed groove or opening the length ofthe units, and in this groove is placed a proper conductingwire,preferably a lead-covered wire, b indicating the wire, (which ispreferably copper or aluminium,) and b the lead-pipe covering, the sameforming a keying device, as well as operating as a conducting-Wire. Theparts being in position, as described and as indicated in thecross-section, Fig. 2, the said parts are fastened together at one ormore places in their length by solder, as at m m, Fig. 1, and the lowerends of the conductingwire cores covered with lead, preferably bysoldering a continuous lead plate 0 to the base of the concrete device.A top supporting means is provided, such as the plate B,

formed of lead, into holes or slots, in which 5 the ends of the wirecores, uncovered, are inserted and then the said plate B soldered fastto the series of units, to which it is thus brought into properposition.

Having thus described my invention, what 2 V i r 647,752

I claim esjnew; and desire to secure by Letters Patent, is

1; A battery-electrode composed of two or more centrally-slatted unitsthe vertical edges whereof have longitudinal grooves which coincide, andan interposed conducting-wire filling said coincidinggrooves when theparts are brought into register, with solder fastenings operating tomaintain said parts permanently in proper relative position;substantially as described. Y

2. A unit-blank fora battery-eleotrode,consisting of a centrally slattedlead structure and continuous solid edgeport-ions exteriorly grooved toreceive a portion of the periphery of a conducting and oonnectin g wire,substantially as described.

3. A battery-electrode composed of two or more centrally-slattedunits,tl1e' Vertical edges of whi'ohjhave' central longitudinal grooveswhich coincide when the parts are brought together, in combination withalead-oovered conducting-wire adapted to fill said coinciding grooves,means to ,fasten the parts permanently' together, means "to protect thelower ends of -the conducting-wires from the action of the electrolyte,and asupporting top plate soldered to the units in the series andinwhich the upper ends of the conducting-wires are embedded;substantially as described.

In testimony whereof I have hereunto affixed my signature this 22d dayof April, A. D. 1899.

RODERICK MACRAE.

Witnesses: v

WALTER G. PUSEY, H; T. FENTON.

